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MacOS slower since native windowing switch?

Jul 23, 2013, 08:52
Post: #1
MacOS slower since native windowing switch?
For a long time I'd been using Gimp 2.8.0 on my Mac Mini. (Running Lion)
It worked well, but it had a few annoying Wacom-related bugs.

Today I upgraded to Gimp 2.8.6 ... and it's very very slow. I tried 2.8.4. Also slow.
(On the plus-side, the Wacom bugs are totally gone.)

I tried a couple of different binary builds. The two linked from the Gimp homepage and one from Partha.com. All very slow. At print resolutions, even something as simple as changing a layer visibility (Previously almost instant) now takes the better part of a minute.

Did something horrible happen to the rendering code during the X11 migration? More importantly how can I fix this?

I've tried
--Turning off all color management.
--Working on monochrome files. (No improvement, which makes me think it must be draw-related.)
-- Increasing and decreasing the tile-cache size.
--Cursing.

So far I've just been using pre-made binaries, but I'm not adverse to compiling my own if I absolutely have to.

Any suggestions? Rolling back to 2.8.0 fixes the performance problem, but I'd really like to have the bug fixes.

Thanks very much for any suggestions.
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Jul 23, 2013, 17:40
Post: #2
RE: MacOS slower since native windowing switch?
I did a search & found some a couple builds made for Lion
(see the top two links on page)
You could try these? Let me know if it works better
http://gimp.lisanet.de/Website/Download.html

"In order to succeed, your desire for success should be greater than fear of failure." BC
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iFS007 tut vids on YT ~ auto color B&W landscape tut
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Jul 23, 2013, 19:03
Post: #3
RE: MacOS slower since native windowing switch?
(Jul 23, 2013 17:40)iForStyle007 Wrote:  I did a search & found some a couple builds made for Lion
(see the top two links on page)
You could try these? Let me know if it works better
http://gimp.lisanet.de/Website/Download.html
I'm afraid that's one of the ones I've already tried.

Tried it again anyway, same problem.

Screen redraws are ridiculously slow. When I change a layer visibility on a file, it redraws slow enough that you could count the tiles!

Am I really the only one experiencing this?
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Jul 23, 2013, 19:15 (This post was last modified: Jul 23, 2013 19:34 by iForStyle007.)
Post: #4
RE: MacOS slower since native windowing switch?
Hmm...
for now check this out if you haven't already, this post has custom/suggested tile cache sizes. It could be how your mac uses gimp in its ram. I know you already tried the tile cache, but try it with the below suggestions (assuming you have enough ram)
http://www.gimpusers.com/forums/gimp-dev...ssage68028

I recommend you look over that whole page too as it could have the answer/fix, there's just a bit much I might have overlooked the actual fix.

For Computer troubleshooting
-Do the gimp menus open up slow too?
- Do you have any other programs(Apps) running in the background?
- Is your computer fairly new / used up hard drive space? (try clearing your internet cache to free up more & uninstall games/programs that you don't use anymore/need.

UPDATE: i had another forum open, saw this post too, miiight work, just make sure you know what your doing
http://www.gimptalk.com/index.php?/topic..._p__374183
"i had the same problem..."
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Jul 23, 2013, 19:55
Post: #5
RE: MacOS slower since native windowing switch?
I'll take a look more carefully through those that first thread, but I think i tried all that.

The second thread is about an X11 problem. The current Gimp for Mac doesn't use X11.
In fact, I have a sneaking suspicion that's somehow related to my problem. The old versions that use X11 work great for me, and the new versions that use native windowing run too slow. Feel like that can't be a coincidence.


The really frustrating part is that, while my Mac is a little short of ram, I don't think that's the problem here.

I can actually run 2.8.0 and 2.8.6 at the same time, both editing the same file. 2.8.0 runs great and 2.8.6 crawls. Very frustrating.

I had the two versions open to go through the "Settings" windows and make sure they were configured identically. They were.
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Sep 23, 2013, 16:48
Post: #6
RE: MacOS slower since native windowing switch?
I see exactly the same behavior. I use an iMac with 32GB Ram and an i7 CPU, so there is lots of resources, but GIMP is painfully slow! The former X11 based version were really fast and I mean rocket-fuel-powered fast!

The only reason for me using the newest is the wavelet decompose which is in again and which was not in the package before.

I hope this behavior has been analyzed. It needs to be solved! I need GIMP for my photography!

Cheers
Frank

http://www.frankbroicher.de

(Jul 23, 2013 19:55)apLundell Wrote:  I'll take a look more carefully through those that first thread, but I think i tried all that.

The second thread is about an X11 problem. The current Gimp for Mac doesn't use X11.
In fact, I have a sneaking suspicion that's somehow related to my problem. The old versions that use X11 work great for me, and the new versions that use native windowing run too slow. Feel like that can't be a coincidence.


The really frustrating part is that, while my Mac is a little short of ram, I don't think that's the problem here.

I can actually run 2.8.0 and 2.8.6 at the same time, both editing the same file. 2.8.0 runs great and 2.8.6 crawls. Very frustrating.

I had the two versions open to go through the "Settings" windows and make sure they were configured identically. They were.
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